The non-discharged panel screws produced by Huizhou Zhanci hardware in Guangdong are of the highest quality. In addition to the spring package, all other components are produced and assembled by the company itself. The quality is strictly controlled. Compared with the imported captive screws, it has a very high price/performance ratio. And its quality is completely replaceable.

Huizhou Zhanci hardware produces various kinds of screws applied to the panel: loose captive panel screws, also called spring screws. The captive panel screws can be riveted to the iron plate to be able to be screwed in and unscrewed. The principle is shown in the animation process attached to this page. The integral piece can be securely attached to the panel without leaving the panel, so it is also said that the screws will not come out.

The outer circle of the hand screwing sleeve is generally pressed with straight-lined teeth so that it can be screwed or manually tightened, and it is also called a tightening screw or a hand-screw.

Loose captive panel screws (spring screws) can be used to install the PCB board, occupying only a small amount of space. The embossing teeth of the pressure-tightening screw of the hand-tightening screw are pressed into the chassis or the thin borehole (Note: The drilling diameter of the thin plate has a certain requirement for the compression tooth diameter of the spring screw. Please refer to the following technical parameters ), Form an exposed spring screw, hand-twist the other end (that is, the hand-twisted end). Because the spring is fixed inside, the screw goes back and forth with respect to the other end of the thin plate. This solution solves the problem of the need to disassemble the screws frequently and is very convenient and practical.